send email through SMTP in ASP.net

 Imports System.Net
Imports System.IO
Imports System.Net.Mail

Following is the Code

  Private Function SendEmail(ByVal mailfrom As String, ByVal mailto As String, ByVal cc As String, ByVal bcc As String, ByVal subject As String, ByVal message As String, ByVal attach1 As String, ByVal attach2 As String, ByVal userid As String, ByVal pwd As String) As String

        Try

            'create the mail message

            Dim mail As New MailMessage()

            'set the addresses

            mail.From = New MailAddress(mailfrom)

            mail.To.Add(mailto)

            mail.CC.Add(cc)

            'mail.Bcc.Add(bcc)

            'set the content

            mail.IsBodyHtml = True

            mail.Subject = subject

            mail.Body = message

            ' add an attachment from the filesystem

            mail.Attachments.Add(New Attachment(attach1))

            'to add additional attachments, simply call .Add(...) again

            '  mail.Attachments.Add(New Attachment(attach2))

            ' mail.Attachments.Add(New Attachment("c:\temp\example3.txt"))

            'send the message

            Dim mailClient As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient()

            Dim d As New dbOperation

         

            'This object stores the authentication values

            Dim basicCredential As System.Net.NetworkCredential = New System.Net.NetworkCredential("xyz@dd.com", "pwd")

            mailClient.Host = "10.0.8.220"

            mailClient.UseDefaultCredentials = False

            mailClient.Credentials = basicCredential

            mailClient.Send(mail)

            Return "ok"

        Catch exp As Exception

            Return "Error: " & exp.Message

        End Try